Hand tool



June 12, 1928. 4 1,673,227

, A. A. A. BYRD HAND TOOL WVIA TW flAABY/w @zfl Patented June 12, 1928.

UNITED- stares 1,673,227 parent ()FFICE.

ANTHONY ALBERT auensrus BYRD} on mason, enemas;

HAND 'roo'fri.

Application filed October 2, 1926, Serial so; 139,151, and in GreatBritain December 2231925. i

This invention relates to a new or improved hand tool to be used for thepee A tool constructed in accordance with the present inventioncomprises a lever or bar so formed at one end that it can" be" used toobtain a purchase aga-inst theobject which the wire is to be applied andon which the wire is to be tightened the said end being so shaped as toform' a fulcrum of the said 7 lever. v v

Adjacent to the fulcrum end of the lever or bar are provided sideflanges or brackets that serve for supporting on a suitable axis a smalllever that is provided'with a cam or eccentrically shaped end to clampthe ends of the wire between said cam and the base or surface of thelever or bar contained within the said side brackets.

In order to accommodate various sizes or gauges of wire or tape thedistance between the aforesaid base and the cam lever must be madeadjustable and for this purpose suitable fiat plates may be secured inany convenient manner to the aforesaid base so as to increase ordecrease the space between the cam lever and the aforesaid flat platewhich may be roughened in any suitable way to increase the grippingefiect.

Obviously the same effect can be obtained by providing the side flangesor brackets of the lever or bar with slots into which blocks carryingthe spindle may be secured by any convenient means said blocks havingthe bore for the spindle provided near to or remote from the aforesaidclamping or gripping surface of the lever or bar or the block may beprovided with a central bore for the spindle and by the interposition ofpacking strips the position of the axis relatively with the grippingsurface adjusted to suit the wire to be strained and twisted.

In order that the invention may be readily understood reference may nowbe had to the accompanying drawing, wherein similar reference charactersrelate to like parts in all the figures thereof.

Figure l is a perspective view of the tool as applied to straining wireloops that are passed through mould plates as commonly used formonolithic building construction.

Figure 2 illustrates the several parts of the tool dissociated from oneanother.

Figure 3 is another perspective view showing the application of the toolto another purpose;

Figures 4 and 5 are respectively fragmentar y elevation and transversesection of a modification in the construction of the tool Referiing nowparticularly to Figures 1 and 2 it 'will; beseen that the lever a at itsfront end" is provided with'the nose or beak b and on its uppersurfacewith the side bracketsc' that support the spindle (Z upon which ismounted the clamping lever e which when turned down in the positionshown in Figure l grips the pair ofwires 7' that are stretched acrossthe space g between-the mould plates it that are presumed to" be set upfor the construction of a monolithi'c'wallif It will be understood thatfor the purpose of inserting the wires f between the clamping lever eand the gripping surface 71 of the lever w, the lever e is raised intothe position shown in Figure 3 and preferably the front end of the levera somewhat raised as compared with that shown in Figure 1. By firstlylowering the lever e the wires are gripped and then the tool is forcedinto the position shown in Figure 1. Obviously the nose or beak Z) willabut against the flanges of the mould plates h and so strain the wires 7that pass across the space g, then by turning the handle j of the toolthe wire will be uniformly twisted as shown at 72 Figure 3. The grippinglever e may be then raised as shown in Figure 3 when the tool can betaken away and the ends of the wires f cut olf if required.

For the purpose of adjusting the space between the clamping lever e andthe gripping plate 1; for dealing with various sizes of wire theinterposition of one of the ex changeable plates c' which are ofdifferent thickness as seen in Figure 2 is all that is necessary and thesaid plate can be secured in place by screws as shown or otherwise.

Figure 3 shows the application of the tool for straining the wire andsecuring vertical and horizontal members of reinforcing rods together ascommonly assembled in monolithic structures.

The modification illustrated in Figures 4: and 5 consists in providingthe brackets 0 with slots m to accommodate blocks n which form bearingsfor the spindle d upon which the clamping lever e is rotatably betweenthe clamping surface of the lever e and the gripping surface of thelever a packing strips '11 are placed beneath the blocks a and a coverplate fixed to the bracket 0 which carries the set-screw p whereby thebearing blocks n are secured firmly in position, otherwise'this tool isprecisely the sameand operates in a similar manner to that described inconnection with Figures 1 to 3.

It will be understoodthat the tool above described can be applied tomany purposes, other than the examples aforesaid, for example forsecuringthe wire strands around packing cases and the twisting of suchWires together in order to securely bind the packet together andpreventaceessthereto without bursting or breaking the wire or band used for thepurpose. I a

What I claim is g- I 1. A hand tool for gripping, straining and twistingwire comprising in combination a hand lever and a cam lever pivotallymounted thereon, said hand lever being provided with a gripping surfaceand also with 9.

nose forming a fulcrum, and means for varying the space between saidgripping surfaceand said cam lever for accommodating various gauges ofwire.

2. A hand tool for gripping,v straining and twisting wire comprising incombination a hand lever and a cam lever pivotally mounted thereon, saidhand lever being provided with a gripping surface and also with a noseforming a fulcrum there being provided a plurality of exchangeableplates of different thicknessfor varying the space between saidgrippingsurface andsaid cam lever for accommodating various gauges ofwire.

3.. A hand tool comprising incombina- .tion, a hand lever provided witha nose forming a fulcrum anda gripping surface above said nose, a pairof brackets ad acent to said nose, a spindle carried by said brack ets,a cam lever pivotally mounted on said spindle there being provided aplurality of exchangeable plates of different thickness for varying thespace between said gripping surface and said cam lever. I

In testimony whereof I aflix my signature.

' ANTHONY ALBERTAUGUSTUS BYRD.

